Please help!!!!!!!!!!!!

Answer:

The other technique which used to separate the coffee or tea is Filtration.

Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass.

Solid particles that cannot pass through the filter medium are described as oversize and the fluid that passes through is called the filtrate.

Answer:

Q = 81.59kJ

Explanation:

Hello,

The heat of condensation is the energy required to to convert the steam into water.

Mass = 195g

Specific heat capacity of water = 4.184J/g°C

Initial temperature(T1) = 100°C

Final temperature(T2) = 0°C

Heat energy (Q) = ?

Heat energy (Q) = mc∇T

M = mass of the substance

C = specific heat capacity of the substance

∇T = T2 - T1 = change in temperature of the substance

Q = 195 × 4.184 × (0 - 100)

Q = -81588J

Q = -81.588kJ

The heat required for the condensation of 195g of steam is 81.59kJ

Answer: carbon dioxide and water.

Explanation: I took the test

Answer:

water and carbon dioxide

Explanation:

i took the K12 test :p

Answer:

He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.

Explanation:

Answer:

Explanation:

The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells. Plant cells do not have lysosomes or centrosomes.

Glycolysis and photosynthesis are fundamental processes that are necessary for the survival of living organisms. They are similar in that they both involve the conversion of energy, but differ in the source of energy used, the location of the process, and the requirement for oxygen.

Glycolysis and photosynthesis are two necessary fundamental processes. Glycolysis is a metabolic pathway that occurs in the cytoplasm of cells. The glycolysis process is necessary because it produces ATP, which is the energy required for all cellular activities.

The energy is produced by breaking down glucose into two pyruvate molecules.Photosynthesis is the process by which green plants make their food. During photosynthesis, light energy is converted into chemical energy, which is stored in glucose molecules. This process is also necessary as it provides food and oxygen for most living organisms to survive.In terms of similarities, both glycolysis and photosynthesis are processes that involve the conversion of energy.

In glycolysis, glucose is converted into pyruvate and ATP, while in photosynthesis, light energy is converted into chemical energy. Both processes are also vital to the survival of living organisms.The primary difference between the two processes is the source of energy used. Glycolysis uses glucose as the primary energy source while photosynthesis uses light energy from the sun.

Glycolysis occurs in the cytoplasm of cells while photosynthesis takes place in the chloroplasts of plant cells. Glycolysis is an anaerobic process that does not require oxygen, while photosynthesis is an aerobic process that requires oxygen and releases it as a byproduct.

for more such questions on conversion of energy

https://brainly.com/question/15105485

#SPJ8

79942.6 calorie is the number of calories of energy absorbed by the water. The energy of an isolated system holds that energy could be transformed.

In physics, energy is indeed the quantitative quality that is imparted to a body or a physical system and is visible in the form of light and heat.

The energy of an isolated system holds that energy could be transformed in form but cannot be generated or destroyed. The joule is the International System of Units (SI) unit of measurement for energy (J).

Q = 2 kg × 4181 J / kg °C × 40°C

   = 334,480 J

   =79942.6 calorie

Therefore, 79942.6 calorie is the number of calories of energy absorbed by the water.

To learn more about energy, here:

https://brainly.com/question/28727910

#SPJ9

Answer:

The volume of the jar needed in order to hold enough oxygen for complete combustion is 24.2 L

(a) C₂H₅OH  + 2O₂ -------> 2CO₂ + 3H₂O

(b)  The moles of oxygen needed to completely combust the ethanol is      0.0429 moles

(c) The Partial pressure of oxygen is 4346.84 Pa

(d) the volume of oxygen (in L) needed in the jar is 1.038 L

Explanation:

Given;

volume of ethanol, V = 1.25 mL

density of ethanol, ρ = 0.789 g/mL

mass of ethanol, m = ρV = (1.25 mL) x (0.789 g/mL) = 0.986g

The volume of the dry air is calculated as;

\(P_d = \rho _d R_d T\\\\P_d = (\frac{M_d}{V_d} )R_d T\\\\V_d = (\frac{M_d}{P_d} )R_d T\\\\V_d = (\frac{0.02897 \ (kg)}{101325 \ (Pa)} )*287 \ (J/K.kg)* 295\ (K)\\\\V_d = 0.0242 \ m^3\\\\V_d = 24.2 \ L\)

(a) a balanced chemical reaction for the combustion of ethanol

C₂H₅OH  + 2O₂ -------> 2CO₂ + 3H₂O

(b) The moles of oxygen needed to completely combust the ethanol.

\(=0.986 g \ C_2H_5OH *(\frac{1 \ mol \ C_2H_5OH}{46g \ C_2H_5OH} )*(\frac{2 \ Mol \ O_2}{1 \ mol \ C_2H_5OH} )\\\\ = 0.0429 \ mols.\)

(c) the partial pressure of oxygen in the jar

Total pressure of air in the jar, Pt = 101,325 Pa

Partial pressure of oxygen = nPt

                                            = 0.0429 x 101,325 Pa = 4346.84 Pa

(d) the volume of oxygen (in L) needed in the jar

Total volume of air in the jar = 24.2 L

The fraction of this volume by oxygen = 0.0429 mols x 24.2 L = 1.038 L

Dry air is composed of many molecules and compounds. The major quantity of molecules present in the dry air is Nitrogen, followed by oxygen, argon, carbon dioxide and many more. Dry air also has some amount of water vapor in it.

The volume of the jar needed to hold enough oxygen for complete combustion can be calculated by:

= density × volume

= 1.25 ml x 0.789 g/ml

= 0.986 g

The volume of the dry air is calculated by the following:

\(\text{P}_d &= \rho_d \text{R}_d \text{T}\)

\(\text{P}_d &= \dfrac{{\text M}_d}{\text{V}_d}} \text{R}_d \text{T}\)

\(\text{V}_d &= \dfrac{{\text M}_d}{\text{V}_d}} \text{R}_d \text{T}\)

\(\text{V}_d &= 0.0242\; m^{3}\)

\(\text{V}_d &= 24.2\;\text L\)

Hence, the volume of the dry air is 24.2 L.

a. Balanced chemical equation for the combustion of ethanol can be written as:

C₂H₅OH + 2 O₂ -------> 2 CO₂ + 3H₂O

One molecule of ethanol reacts with two molecules of oxygen to produce two molecules of carbon dioxide and three water molecules.

b. To calculate the moles of oxygen needed for complete combustion of ethanol can be calculated as:

\(\begin{aligned}&=0.986g\;\text{C}_2\text{H}_5\text{OH}\times\left(\frac{1\;\text{mol}\;\text{C}_2\text{H}_5\text{OH}}{46\;g\;\text{C}_2\text{H}_5\text{OH}} \right )\times\left(\frac{2\;\text{Mol\;O}_2}{1\;\text{mol}\text{C}_2\text{H}_5\text{OH}} \right )\\&=0.0429\text{mols} \end{aligned}\)

Hence, 0.0429 moles of oxygen will be needed to completely burn ethanol.

c. The partial pressure of the oxygen in the jar can be calculated by the following formula:

Given,

= nPt

= 0.0429 x 101,325 Pa

= 4346.84 Pa

Hence, the partial pressure of oxygen will be 4346.84 Pa.

d.  The volume of oxygen (in L) needed in the jar can be calculated using the volume of the jar.

= 0.0429 moles x 24.2 L

= 1.038 L

Therefore, the volume of the jar needed to hold enough oxygen for complete combustion is 24.2 L.

To learn more about combustion reaction follow the given link:

https://brainly.com/question/25092860

1. The IUPAC name of N is nitrogen.

2. Nitrogen dioxide

3.The IUPAC name of O is oxygen

4.The IUPAC name of OH is hydroxyl.

The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.

IUPAC names for the given compounds are:1.1. N: Nitrogen

The IUPAC name of N is nitrogen.

It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide

Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.

The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen

Explanation: The IUPAC name of O is oxygen.

It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.

X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.

Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.

It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.

for more question on electronic configuration

https://brainly.com/question/26084288

#SPJ8

Note: The complete question is given below

Provide the IUPAC names for the following compounds:

\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)

C6H5CH(CH3)2

H2NCH2CH2CH2CH2CH2NH2

CH3CH2CH2CH2CH2OH

CH3CH2CH2CHOHCH3

Option b is the correct answer. Nucleic acid is a type of biochemical is shown in this illustration.

The representation gave is an improved on variant of the design of a nucleotide, which is a structure block of nucleic acids like DNA and RNA. The nucleotide comprises of three parts: a sugar particle (displayed in the representation as CH2OH), a nitrogenous base (not displayed in this delineation), and a phosphate bunch (displayed in the representation as - O-P=O). The phosphate bunch is adversely charged and can shape hydrogen bonds with different nucleotides to make the foundation of the nucleic corrosive strand. The plan of nucleotides and the arrangement of the nitrogenous bases decide the hereditary code and capability of the nucleic corrosive.

To learn more about nucleic acid, refer:

brainly.com/question/30972834

#SPJ1

When dissolved in water, most Group 1 metal salts can be described as strong electrolytes.

When Group 1 metal salts are dissolved in water, they can be described as strong electrolytes. This is because Group 1 metals, such as lithium (Li), sodium (Na), potassium (K), and so on, readily lose their outermost valence electron to form positive ions (cations). These cations then dissociate completely in water, separating from the anions to which they were originally bonded.

The dissociation of Group 1 metal salts in water results in the formation of positively charged metal ions and negatively charged non-metal ions (anions). These ions are free to move and conduct electric current, making the solution a good conductor of electricity. The complete dissociation of Group 1 metal salts in water and the presence of freely moving ions make them strong electrolytes.

Strong electrolytes are substances that ionize completely or almost completely in solution, producing a high concentration of ions. This is in contrast to weak electrolytes, which only partially ionize and produce a lower concentration of ions.

In summary, when Group 1 metal salts are dissolved in water, they form strong electrolytes due to their ability to dissociate completely into ions, leading to a high concentration of freely moving ions in the solution, thus enabling efficient electrical conductivity.

Know more about Group 1 metal salts here:

https://brainly.com/question/13277375

#SPJ8

To solve such this we must know the concept of combination reaction. Therefore, the given reaction CH\(_4\)+Br\(_2\) \(\rightarrow\)CH\(_3\)Br+ HBr is a combination reaction.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

CH\(_4\)+Br\(_2\) \(\rightarrow\)CH\(_3\)Br+ HBr

The above reaction is a combination reaction. In combination reaction, more than one reactant combine to form a product. Because new chemicals are created during combination reactions, they are often referred to as synthesis.

Therefore, the given reaction is a combination reaction.

Learn more about the chemical reactions, here:

https://brainly.com/question/3461108

#SPJ1

Answer:

compound 1 = 0.749gF / 1.0gl

compound 2 = 0.4489gF / 1.0gl

compound 3 = 1.047gF / 1.0gl

Explanation:

Given that;

compound       mass of iodine in grams          mass of fluorine in grams

       1                              4.75                                             3.56

       2                             7.64                                             3.43

       3                             9.41                                              9.86

a) Calculate the mass of fluorine per gram of iodine in each compound:

- compound 1

mass of Fluorine = (3.56gF / 4.75gF) * 1.0gl

= 0.749gF

Now RATIO = 0.749gF / 1.0gl

- compound 2

mass of Fluorine = (3.43gF / 7.64gF) * 1.0gl

= 0.4489gF

Now RATIO = 0.4489gF / 1.0gl

- compound 3

mass of Fluorine = (9.86gF / 9.41gF) * 1.0gl

= 1.047gF

Now RATIO = 1.047gF / 1.0gl

Answer: 4

Explanation: There are 4 sig figs because 6 and 4 are always considered significant. And a 0 is considered a sig fig if it's between two numbers besides 0 or if it's after a decimal point.

Nadia will take 8 seconds to reach her friend's house.

Speed is the measure of the distance traveled by an object per unit of time. It is a scalar quantity and is typically expressed in units such as meters per second (m/s), miles per hour (mph), or kilometers per hour (km/h).

To calculate the time Nadia will take to reach her friend's house, we can use the formula;

time = distance / speed

where distance is the amount of space traveled by an object, and time is the duration of travel.

Put the values given in the problem, we have:

time = 24 meters / 3 m/s

time = 8 seconds

Therefore, Nadia will take 8 seconds.

To know more about time here

https://brainly.com/question/15356513

#SPJ1

1. A farmer can reduce negative impacts on water quality in nearby streams and lakes by using conservation tillage practices, avoiding the use of fertilizers and pesticides, and planting cover crops to reduce soil erosion in the habitat area.

2. This model could demonstrate the movement of tectonic plates and the resulting earthquakes and volcanoes. 3. According to the map, the hikers' route would go downhill as they moved west of the radio tower.

4. Kingdoms: Animalia - 1, Plantae - 2, Fungi - 3, Protista - 4, Monera - 5 5. Humans contribute to negative impacts on the food supply through overfishing, ocean pollution, and habitat destruction as in earthquakes .

Learn more about  earthquakes  at:

https://brainly.com/question/29500066

#SPJ1

1. Examples of solids, liquids, and gases found in a home

Solids: books, furniture, toys

Liquids: water, juice, shampoo

Gases: air, natural gas, propane

2. The human body contains solids, liquids, and gases. Solids include bones, muscles, and organs. Liquids include blood, saliva, and urine. Gases include air in the lungs and dissolved gases in the bloodstream. The body is mostly made up of liquids, as they make up a large percentage of its overall volume.

3. If you needed to remove the water from a sample of blood to study the solids that remained, you could use a process such as evaporation or freeze-drying. Evaporation involves heating the sample to allow the water to evaporate, leaving behind the solids. Freeze-drying involves freezing the sample and then removing the water under vacuum, leaving behind a dry solid.

4. Some metals that could be found within the human body include iron, zinc, and copper. These metals are commonly found in foods such as meat, seafood, nuts, and whole grains. Other metals such as calcium, magnesium, and potassium are also important for the body and are found in a variety of foods.

To know more about solids here

https://brainly.com/question/21500863

#SPJ1

Answer:

Explanation:

The subscripts in a formula determine the ratio of the moles of each element in the compound. To convert this formula to the empirical formula, divide each subscript by 2. This is similar to reducing a fraction to its lowest denominator.

Answer:

144g of H₂O

Explanation:

3NH₄ClO₄(s) + 3Al → Al₂O₃(s) + AlCl₃(s) + 3NO(g) + 6H₂O(g)

From the equation:

3 moles of NH₄ClO₄ produced 6 moles of H₂O

4 moles of NH₄ClO₄ produced ? moles of H₂O

(4 ₓ 6)/3 = \(\frac{24}{3}\) = 8 moles of H₂O

1 mole of H₂O = (1 × 2) + 16 = 18g (The Relative Molecular mass of H₂O)

8 moles of H₂O = ?

Therefore 8 × 18 = 144g

=144g of H₂O

Answer:

Energy required to remove an electron from the atom.

Explanation:

Energy required to remove an electron from an atom describe ionization energy because in chemistry, ionization energy in is the amount of energy needed to remove electrons from the atoms or ions of chemical species.

Ionization energy increases as we move across the period of elements in the group and this is because electrons are bond tighter by high effective nuclear charge and ionization energy of elements increases down the group because electrons are bond together in lower energy orbitals.

Answer:

V «T, 1/P, n (Product of

Temperature, Half of pressure, and Moles)

Explanation: If V o n, V « 1/P, and V T

then, V« T, 1/P, n

Answer:

1.09

Explanation:

Keep in mind that the volume of the solution changes during this titration, so to compute the amount of hydronium that is neutralized during this addition of base (in order to calculate the final pH of the solution), we must calculate the moles of all species in solution initially present. Because both NaOH and HCl ionize completely:initial mol OH−=mol NaOH=(0.0050 L)(0.10 molL)=0.00050 mol OH−initial mol H3O+=mol HCl=(0.050 L)(0.10 molL)=0.0050 mol H3O+The acid is in excess, so all of the OH− present will neutralize an equivalent amount of H3O+, forming water. Thus we simply subtract the moles of hydroxide from the moles of hydronium in solution to find the resultant moles of H3O+ after this neutralization:final mol H3O+= initial mol H3O+−initial mol OH−final mol H3O+=0.0050 mol−0.00050 mol=0.0045 mol H3O+We now calculate the total volume of the solution by adding the volumes of acid and base initially combined: 0.050 L+0.0050 L=0.055 LTo get [H3O+], we divide the final moles of hydronium by the final solution volume:[H3O+]=final mol H3O+ total volume=0.0045 mol0.055 L≈0.08181molLFinally, to find pH:pH=−log[H3O+]=−log(0.08181)=1.09Since the hydronium concentration is only precise to two significant figures, the logarithm should be rounded to two decimal places.

Based on the information provided, we have a reaction between hydrogen iodide (HI) gas and hydrogen gas (H₂) to form iodine gas (I₂). The equilibrium is represented by the equation:

2HI(g) = H₂(g) + I₂(g)

The concentration values given in the table correspond to the concentrations of H₂ and HI at different times.

a) From t=0 s to t=5 s: Without the specific graph mentioned in Figure 7.10, it is difficult to provide a precise explanation of the physical situation in the container during this time period. However, based on the equilibrium reaction given, we can make some general observations. At the start (t=0 s), the concentrations of H₂ and HI may be high. As time progresses, the reaction proceeds, and the concentrations of H₂ and HI may decrease while the concentration of I₂ increases. The specific behavior will depend on the rate of the forward and reverse reactions.

b) External factor altered at t=5 s: To bring about a change in the shape of the graph at t=5 s, some external factor must have been altered. The most likely factor is the total pressure within the container. Since the reaction involves gases, changes in pressure can affect the equilibrium position. However, according to the information given, a change in pressure will not affect equilibrium in this case since the number of moles of gas is the same on both sides of the equation. Therefore, if the shape of the graph changes at t=5 s, some other external factor, such as temperature or the addition of a catalyst, must have been altered.

c) Calculation of K at t=3 s: The equilibrium constant (K) can be calculated at any given time using the concentrations of the reactants and products. However, the concentrations of H₂ and HI at t=3 s are not provided in the information given. Without the necessary data, it is not possible to calculate K at t=3 s.

Lastly, the statement "1 dm³ COCI, decomposes" seems incomplete. If you provide additional information or clarify the question, I'll be happy to assist you further.

Answer:

1.0 moles of N2

Explanation:

since

1.0 × avogadro's no# = same answer for SO2 and N2

avogadro's no#= 6.02× 10²³

The number of molecules in 1.0 mole of SO₂ is the same as the number of molecules in (3) 0.25 mole of NO₂.

Option (3) is correct.

Avogadro's number, approximately 6.022 x 10²³, represents the number of molecules or atoms in one mole of any substance. In this case, 1.0 mole of SO₂ contains the same number of molecules as any other substance with 1.0 mole, such as 1.0 mole of N₂ or 2.0 moles of Ne.

However, when comparing different moles of substances, we can use the concept of stoichiometry and molar ratios to determine the number of molecules. Given that 1 mole of SO₂ is equivalent to 1 mole of NO₂, 0.25 mole of NO₂ would also contain the same number of molecules as 1 mole of SO₂. Therefore, the number of molecules in 1.0 mole of SO₂ is the same as the number of molecules in 0.25 mole of NO₂.

To learn more about number of molecule here

https://brainly.com/question/32364567

#SPJ2

Answer: You have a solution of potassium chlorate containing 4 g at 65º C. How many additional grams of solute must be added to it, to make the solution saturated ? approximately 26 more grams [the solubility of potassium chlorate is ... water. The solution is allowed to cool. At what new temperature would crystals begin to.

Explanation:

Answer:

B, C, D, E

Explanation:

According to Henry's law, as the pressure is increased, the solubility of a given gas increases. So, solubility is directly proportional to pressure.

Thus, the following statements are correct:

B. More gas molecules are soluble as pressure is increased.

Is correct because as the pressure is increased, the solubility increases.

C. The solubility of a gas decreases with a decrease in pressure.

Is correct because solubility and pressure are directly proportional: if the pressure is decreased, the solubility will be decreased.

D. The solubility of nitrogen gas at 2.00 atm is twice the solubility of the gas at 1.00 atm.

Is correct because 2.00 atm is twice 1.00 atm, so if the pressure is increased twice, the solubility is increased twice.

E. The concentration of gas particles in the solution is higher at 4.25 atm than at 1.00 atm.

Is correct because 4.25 atm>1.00 atm (the higher the pressure, the higher the solubility, and therefore the concentration of gas particles in solution).

The remaining options (A, G) are incorrect. They contradict Henry's law.

Answer:

Oxygen is the main element of life.

Explanation:

Because Oxygen allows us to breathe..

I hope this helps you!

XoXo Makayla